@inproceedings{inproceedings6ba26137,
title   = {The natural radioactivity in the Presidente Figueiredo (Brazil) region using gamma-ray spectrometry. [em CD-ROM]},
author = {Silva, J R S and Hiodo, Francisco Yukio and Flexor, Jean-Marie},
year = {2000},
publisher = {CPRM},
booktitle   = {International Geological Congress}
}